B...
Review confirmed by purchase 
I am a bit disappointed with this bag for the price. The inside looks like it should be waterproof, but unfortunately it is not. Liquids pass through from both sides of the bag. The zipper on the flap is poorly finished, so to avoid damage you have to secure it yourself. One internal pocket is at the "bottom of the backpack", so if you wear the bag on your back, everything presses on its contents. The pocket on the flap occupies its entire surface, which is great because an A4 folder fits in it. When you carry it by hand, as a bag, it is comfortable regardless of the contents, but as a backpack, it's just average (unless it's full of soft things).
